Ekasit Vorakitolan, N.A. Mould, J. Havlicek, Ronald D. Barnes, A. R. Stevenson
{"title":"A low-cost distributed instrumentation system for monitoring, identifying and diagnosing irregular patterns of behavior in critical ITS components","authors":"Ekasit Vorakitolan, N.A. Mould, J. Havlicek, Ronald D. Barnes, A. R. Stevenson","doi":"10.1109/ITSC.2011.6082868","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082868","url":null,"abstract":"ITS telecommunication infrastructure and information gathering/distribution equipment such as fiber-optic routing devices, communication huts, uninterrupted power supplies (UPSs), cameras and dynamic message signs (DMSs) are critical to the effective management of resources in emergency situations. Frequently encountered scenarios include evaluating the severity of vehicle collisions to dispatch appropriate law enforcement and ambulatory services, or issuing time-sensitive AMBER alerts to assist in the effort to find missing or kidnapped children. Due to the unacceptably high cost of ITS equipment failures, preventative maintenance and dense operational testing are high priorities. In this paper we present a low-cost distributed instrumentation system (DIS) for continuous monitoring of critical ITS components. Over the last three years, we have developed and deployed the DIS in the Oklahoma Department of Transportation (ODOT) private fiberoptic network that spans several major metropolitan areas in and around Oklahoma City, Tulsa and Lawton. The Oklahoma DIS is responsible for monitoring the health of the entire ODOT ITS communications network as well as the integrity of each camera video signal and the operational status of each DMS. All of the information acquired by the DIS is integrated into an operational summary that is available on a private website for the design and execution of ITS equipment maintenance plans. In Oklahoma, information acquired by the DIS has been successfully integrated into a wide range of operation and maintenance (O&M) planning, which has led to a significant improvement in terms of overall ITS quality of service (QoS) and a quantifiable reduction in wasted costs associated with the premature discarding of energy storage devices.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132964884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. García, B. Musleh, A. D. L. Escalera, J. M. Armingol
{"title":"Fusion procedure for pedestrian detection based on laser scanner and computer vision","authors":"F. García, B. Musleh, A. D. L. Escalera, J. M. Armingol","doi":"10.1109/ITSC.2011.6082971","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082971","url":null,"abstract":"Sensors represent a key element in Advance Driver Assistant Systems (ADAS). The lack of reliable sensors able to fulfill the requirements for road safety applications leads to the necessity of combining them to create a fusion procedure able to overcome the limitations of a single set of sensors. Recent advances in vision based pedestrian detection have lead to robust approaches able to detect pedestrians in a wide variety of situations. On the other hand laser scanners have proved to be a very powerful tool when dealing with intelligent transport systems and safety application. By combining the capabilities of both set of sensors, a robust and trustworthy application able to deal with the most exigent necessities can be created. The presented algorithm combines the pedestrian detection given by both subsystems adding confidence to single sensor detections.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117220471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Naoki Yamamoto, A. Utsumi, Kiyoshi Fujimoto, Shinji Abe, N. Matsuo
{"title":"Gaze-reactive brightness control of car onboard display for ensuring visibility during night driving","authors":"Naoki Yamamoto, A. Utsumi, Kiyoshi Fujimoto, Shinji Abe, N. Matsuo","doi":"10.1109/ITSC.2011.6083001","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6083001","url":null,"abstract":"In this study, we proposed gaze-reactive brightness control of car onboard displays to ensure driver visibility and explored the method's effectiveness. In Experiment 1, we investigated the effect of an onboard display light for visibility and confirmed our proposed method's effectiveness. In Experiment 2, we developed the method presented in Experiment 1 and further explored its effectiveness under settings close to those for an actual onboard display and driving operations. The results indicated the effectiveness of gaze-reactive brightness control at maintaining visibility for both onboard displays and dark outside fields. We also investigated the impressions and psychological effects of our proposed method to evaluate its acceptability and application potential. The questionnaire results showed better impressions and positive emotional states of users when the method was used. The present results showed that the gaze-reactive brightness control of onboard displays helps drivers maintain visibility and provides positive psychological effects.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"272 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114245118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Ayed, Z. Habbas, D. Khadraoui, C. Gálvez-Fernández
{"title":"A parallel algorithm for solving time dependent multimodal transport problem","authors":"H. Ayed, Z. Habbas, D. Khadraoui, C. Gálvez-Fernández","doi":"10.1109/ITSC.2011.6082973","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082973","url":null,"abstract":"This paper deals with the Time Dependent Multimodal Transport Problem (TDMTP). The main contribution of this work is to propose a parallel algorithm for solving the TDMTP in very large transport networks. This new ad-hoc parallel approach takes advantage of the possible decomposition of real transport networks according to transport modes and regions. We implemented our algorithm using a parallel shared memory machine, being tested in a super computer cluster. The first experiments results on random theoretical graphs as well as on real transport networks are very promising.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121167418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Siordia, Isaac Martín de Diego, C. Conde, E. Cabello
{"title":"Combining traffic safety knowledge for driving risk detection","authors":"O. Siordia, Isaac Martín de Diego, C. Conde, E. Cabello","doi":"10.1109/ITSC.2011.6082852","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082852","url":null,"abstract":"In this paper a novelty method to combine knowledge of traffic safety experts, in order to detect driving risk situations, is presented. A set of driving sessions were executed in a very realistic truck simulator where several magnitudes and visual information from the vehicle, driver and road were collected. Two kind of experiments were designed: controlled driving sessions (where several risky situations were induced), and natural driving sessions (where a natural driving behavior was expected). A group of traffic safety experts were consulted to evaluate the driving risk in each session. The information acquired from the traffic safety experts was used to develop a methodology to combine the information and to define a set of driving risk models. The developed system detected most of the induced risk situations besides of several non-induced risk situations. The methodology presented in this paper can be used to obtain a driving risk ground truth in order to compare and evaluate risk detection algorithms and to analyze the influence of vehicle, driver and road variables on the driving risk.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121244543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improving performance of DS/SS-IVC under shadowing environment using LMS adaptive circular array antenna","authors":"Ken Yamamoto, K. Ohno, M. Itami","doi":"10.1109/ITSC.2011.6082866","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082866","url":null,"abstract":"In this paper, an adaptive circular array antenna is applied to DS/SS (Direct Sequence / Spread Spectrum) IVC (Inter-Vehicle Communication) under shadowing environment. The DS/SS scheme is an attractive technique for the IVC system because it has advantages for CDMA (Code Division Multiple Access) capability and so on. However, the near-far problem is occurred in the DS/SS scheme. Shadowing the radio paths by large vehicles is also significant problem for the IVC system. To solve those problems, a LMS (Least Mean Square) adaptive circular array antenna is proposed. The array antenna can be controlled its directivity when the receiving vehicle knows the information of the target vehicle. The PER (Packet Error Rate) and the throughput performances are evaluated. And the performances are compared with the ordinary system by using omini-directional antenna. From the simulation results, the adaptive circular array antenna is effective for the near-far problem and influence of shadowing in the DS/SS TVC system.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121278099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A dynamic approach for ensuring the functional reliability of next-generation driver assistance systems","authors":"T. Michalke, Agalya Jebens, L. Schäfers","doi":"10.1109/ITSC.2011.6082881","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082881","url":null,"abstract":"Based on the recent progress in the quality of automotive-proven sensors (stereo cameras, radar) and the constant algorithmic improvements, novel driver assistance systems become available that allow for actively preventing or mitigating collisions, e.g., by automatic braking and steering. Along with the growing functional potential of these systems the challenge of providing the required functional reliability is growing. The contribution proposes a systematic approach for handling the sensor- and system-immanent uncertainties. The proposed methods are applied on a state-of-the-art collision mitigation system that allows, e.g., an automatically commanded emergency braking even in highly dynamic situations.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121111975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Ploeg, Bart Scheepers, E. V. Nunen, N. Wouw, H. Nijmeijer
{"title":"Design and experimental evaluation of cooperative adaptive cruise control","authors":"J. Ploeg, Bart Scheepers, E. V. Nunen, N. Wouw, H. Nijmeijer","doi":"10.1109/ITSC.2011.6082981","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082981","url":null,"abstract":"Road throughput can be increased by driving at small inter-vehicle time gaps. The amplification of velocity disturbances in upstream direction, however, poses limitations to the minimum feasible time gap. String-stable behavior is thus considered an essential requirement for the design of automatic distance control systems, which are needed to allow for safe driving at time gaps well below 1 s. Theoretical analysis reveals that this requirement can be met using wireless inter-vehicle communication to provide real-time information of the preceding vehicle, in addition to the information obtained by common Adaptive Cruise Control (ACC) sensors. In order to validate these theoretical results and to demonstrate the technical feasibility, the resulting control system, known as Cooperative ACC (CACC), is implemented on a test fleet consisting of six passenger vehicles. Experiments clearly show that the practical results match the theoretical analysis, thereby indicating the possibilities for short-distance vehicle following.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116677151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transport psychology based cognitive architecture for traffic behavior prediction","authors":"K. Varadarajan, Kai Zhou, M. Vincze","doi":"10.1109/ITSC.2011.6082797","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082797","url":null,"abstract":"Prediction of extemporaneous events in traffic surveillance is crucial in the prevention or alleviation of the gravity of accidents. Modeling of normal/ abnormal behavior and mental state inference of drivers help in the prediction of such events. Traffic psychology lends itself to the development of such models. Analysis of driver state, emotion and behavior are important components of traffic psychology. However, most models based on traffic psychology are rather abstract and lack neurobiological grounding. They are also disparate from computational models of traffic monitoring. In this paper, we extend and develop neurobiologically grounded computational models for driver state and behavior inference by mimicking the mirror neuronal architecture. The developed system uses a combination of modular cognitive neurobiological architecture combined with traditional computer vision techniques for traffic monitoring resulting in prediction and detection of extemporaneous events. Psychophysical as well as neurobiological criteria are used for evaluation on both simulated and real data. The model is shown to be robust to perturbations, with rapid convergence (less than 0.2 normalized time units) in most cases.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114802893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Bayesian approach to jointly estimate tire radii and vehicle trajectory","authors":"","doi":"10.1109/ITSC.2011.6082980","DOIUrl":"https://doi.org/10.1109/ITSC.2011.6082980","url":null,"abstract":"High-precision estimation of vehicle tire radii is considered, based on measurements on individual wheel speeds and absolute position from a global navigation satellite system (GNSS). The wheel speed measurements are subject to noise with time-varying covariance that depends mainly on the road surface. The novelty lies in a Bayesian approach to estimate online the time-varying radii and noise parameters using a marginalized particle filter, where no model approximations are needed such as in previously proposed algorithms based on the extended Kalman filter. Field tests show that the absolute radius can be estimated with millimeter accuracy, while the relative wheel radius on one axle is estimated with submillimeter accuracy.","PeriodicalId":186596,"journal":{"name":"2011 14th International IEEE Conference on Intelligent Transportation Systems (ITSC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114901699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}